Asphalt-paving plant.



GL I. WILLIAMS. ASPHALT PAVING PLANT.

. APPLICATION FILED JULY 10,190?. v 978,973. Patented Dec. 20,'1910.

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C. I. WILLIAMS. ASPHALT PAVING PLANT. APPLIOATION prima JULY 1o, 1907.

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CHARLES L WILLIAMS, or UTICA, Naw YORK.

ASPHALT-PAVING' rLANT.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application filed July lO, 1907. Sera1 No. 383,128.

My invention relates to an improved as phalt paving plant, and I declare that the following is a full, clear concise and exact description thereof, suiicient to enable one skilled in the art to make and use the same, reference being had to the accompanying drawings in which like numerals and letters refer to like parts throughout.

Thilo the invention is called an asphalt paving plant, it is evident that it may be given a variety of uses and is not limited to the particular showing.

The purpose of the invention is to provide an eliicient, compact, economical and improved construction for such a plant, especially one whichV can be set up in a building of much smaller dimensions than is customary, or can be readily transported from place to place.

With this idea I illustrate the invention as mounted on a single platform car for transportation and for the manufacture of asphalt paving mixture on the car. In another view I show how these utilities can be arranged in a compact manner in a building of comparatively small dimensions, and so positioned as to greatly increase the facilities for the work as is also the case in the showing of the other form.

The features of my invention will appear. from an examination of the drawings and the following description.

Figure l of the drawings is a plan view of the device mounted on a platform car, showing the parts in position for operation; Fig. 2 is a side view of the same, and Fig. 3 is a vie-w from the opposite side. Fig. 4 is a plan view of such plant located in a building, and Fig. 5 is an end view of the same. Fig. 6 is a sectional view on line mof Fig. 2, but with the mixer elevated above the car floor.

With reference particularly to the form shown in Figs. l, 2 and 3, it may be said that one of the advantages of my iinprovef ment is that the plant can be expeditiously set up on arrival at a given point, diEerent outlying parts of the apparatus being so constructed as to be readily dismounted and loaded on the car, the several members being so arranged, both on the car and also in the example shown in Figs. l and 5, so as to avoid the elaborate superstructure of storage bins, hoisting apparatus and elevators which have heretofore been thought necessary to get proper feed to the apparatus and also to avoid the necessity of numerous sprockets, chains, belts and conveyers whichy have been necessary for the operation of such a device.

Referring to the figures in detail, l represents a platform car of ordinary construction. At one end of the car is located the sand supplying apparatus and at the other end the asphalt supplying apparatus. The former comprises a casing 2 within which is mounted the usual cylinder or drum used in driers which consists of a cylindrical mem ber 3 suitably mounted to revolve and provided at one end to receive the material to be dried and heated and at the other end to discharge the same. This drier is of familiar construction and need not be shown or described in detail. Beneath the cylinder and its boxes are located suitable lire-boxes for heating the material and shown at 4, and also at the other end are located fire-boxes 5 for heating the asphalt. At the outer end of thel drier 3 is a supply-box or storage-bin 6 above which is mounted the trolley-struc ture 7 comprising track S shown as an I- beam. The box is formed with a slanting bottom 9 to feed into the cylinder by gravity,

or it can be arranged for mechanical feed. This outlet is here governed by a lever l0 extended to a point convenient to the operator, as shown in Fig. l, sothat he can regulate the feed of material to the drier. The track 8 extends on one o-r both sides of the car to such points as are convenient to take the material in buckets 11 which are hoisted and carried on the track by suitable means. But I prefer to employ a motor hoist and travel A so that the bucket can be located and when filled be raised and carried on the track to discharge the contents into the supplyboX vor storage-bin. Y

It will be understood that these tracks are suitably supported by braces or guys at suitable points, and indicated in a general way by 13. It will also be understood that suitable means are to be provided for operating the plant, and I show at one end of the car platform a small engine B suitable to operate a dynamo C. All power is to be supplied from the single source, or from other suitable sources, or, if preferred, from the local electric supply.

At the discharge end of the drier cylinder, 3, there is provided a trough 15, shown in dotted lines in Fig. 1, into which material is discharged from the cylinder and the bottom of which being on a slant discharges the same into the storage-bin 16 for hot material, which is suitably and removably mounted on the side of the car, as for instance by bolts passing through it and the side beam of the car. Adjacent this sto ages bin for the hot material is a` bin, 17, likewise suitably mounted to hold dry cold material and having a slanting bottom, as is also the case with bin 1G. The purpose of this bin 17 is to provide a supply of cold dry material to mix with that which is taken from the hot storage-bin 16 to regulate the temperature of the material which is to be used in the mixture.

About midway of the car platform and at one side is shown a mixer or pug-mill 20 which is of ordinary construction and the details of which need not be specifically shown or described. If desired, a motor 21 may be provid-ed in connection with the mixer to operate the same. From a point above the mixer to a point adjacent to the hot storage-bin 1G is an elevated track Q2 adapted to carry a motor and hoist. of the character described, for the carriage of bucket 23 to be lowered to receive hot material from the box lt and cold material from the box 1T, if required, and thence to carry the same to be discharged into the mixer Q0. On the other end of the car are provided asphalt tanks, Q5, of which I show a number, each having a discharge valve at the. bottom shown at iti. Alongside these tanks is mounted a track to carry a motor and bucket for collecting the component material, such as asphaltic cement, from the proper tank and conveying it to the mixer, Q0, the track being' indicated by 27. At the opposite end oit' these tanks is shown a track 2S suitably supported and carrying a motor and bucket 29 to convey material from the supply source to the tanks.

30 indicates a track extending from a point over the mixer outwardly and supported at suitable points, as by braces 31, and which is provided with a like motor to carry bucket and which bucket is carried under the car on lower track 33, so that the mixer discharges into the bucket which is then taken by the trolley and carried out on the track 30 to wagons, or a motor and bucket may be used to discharge directly into wagons without the use of bucket 32, or, as seen in one illustration, the wagon may be brought into position to receive the discharge directly from the mixer.

It will be understood that the mixer may be elevated above the platform of the car so as to make discharge through an inclined chute into wagons and as indicated in Fig. 6.

It will be understood that the parts which form and support the several tracks are to be suitably framed for immediate erection and dismounting and are to be suitably secured as on standards fixed to the car-sills or base structure, being removably attached so that they can be readily mounted and dismounted for transportation. Further, the track structure may be made extensible by duplication of sections and may be arranged to reach any given point.

Instead of using tracks for the motors it may be preferred to use other suitable conveyer means located as in the showing in practically one level of work, it being my purpose to avoid the necessity of working from one level through elevated members of the apparatus and of erecting, maintaining and operating such members.

Referring particularly to the showing made in Figs. eland 5, it will be seen that I arrange the drier and the accompanying' parts in substantially the same manner with track, motor and bucket to convey the hot material to the mixer Q0. On the other side are the tanks for the component material, with their associated utilities, including means to convey the material to the tanks Q5 and therefrom to the mixer 20.

To those familiar with the artit will be apparent that my device is substantially different from anything heretofore employed, in that the several elements which make up the apparatus are located substantially on a level and the feed of material is made by carriage which avoids the cost of machinery and apparatus, and the expense of maintaining the same, to convey material to an elevated point, and the multitude of gearing, sprockets, chains, conveyers and belting which is necessary in th-e operation of such a device and the mounting and dismounting` of which require a great deal of time well as expense.

The drier and the tanks are separated by a space wide enough for a wagon and the mixer is on a platform raised high enough to allow the wagon to drive under so that the discharge into the wagon can be made directly from the bottom of the mixer into the wagon.

Having described my invention, what I claim as ne f and desire to secure by Letters Patent, is:

l. In a plant of the character described, the combination with an asphalt melter and a mixer, of a sand heating member, the same comprising an automatic feeding supply, a

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receptacle for the heated output therefrom and a receptacle adjacent to the latter for cold sand, the two latter receptacles having outlets for discharge into a common receptacle whereby the sand may be mixed to supply the mixer with sand of desired temperature, substantially as described.

2. In a plant of the character described, the combination with an 4asphalt melter and a mixer, of a sand heater all arranged on a single portable platform, the sand heater comprising means for the passage of sand therethrough to be heated, with means for opening and closing the supply thereto`l and a plurality of bins at the outlet end of said heater, one to receive the discharge therel from and one to contain a ksupply of vcold sand, the two bins having a common discharge wherebyT the contents may be proportioned in the mixing of the product to supply sand of a given temperature, substantially as described. f

In testimony whereof I atix my signature in the presence of two witnesses.

CHARLES I. WILLIAMS. Vitnesses ELEANOR T. DE GIORGI,

EVERETT E. RrsLEY. 

